公开(公告)号：US20210003332A1

公开(公告)日：2021-01-07

申请号：US16920264

申请日：2020-07-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tadahiro NAKAGAWA ,  Hirooaki EGUCHI ,  Masatoshi TAKAHASHI

IPC: F25B49/02 ,  F25B45/00 ,  F25B41/04 ,  F25B43/00 ,  F25B40/06 ,  F25B40/04

Abstract: The present invention provides an inexpensive and stable refrigerant charging device and a refrigerant charging system by improving a charging speed and reducing costs while preventing liquid-back. The present invention includes a refrigerant charging flow path having a refrigerant charging port connected to a refrigerant flow path of an air conditioner, a valve provided at the refrigerant charging flow path, and a control device configured to control the valve. The control device includes a discharging superheat calculator configured to calculate the discharging superheat degree from a refrigerant temperature and a refrigerant pressure at a discharge side of a compressor, and a valve controller configured to control the opening and closing state of the valve based on the calculated discharging superheat degree calculated by the discharge super-heat calculator.